They had to say goodbye, somehow. Watch every regeneration episode since the Doctor returned to our screens.
The Bringer of Darkness, the Oncoming Storm, the Doctor, the Warrior - A Time Lord!
The Doctors embark on their greatest adventure in this 50th-anniversary special!
The Doctor, Rose and Captain Jack have to fight for their lives on board the Game Station.
The ninth Doctor's final episode is an epic encounter with the Daleks.
On Christmas Eve, the Doctor is reunited with Wilf to face the return of an old enemy.
The Doctor faces the end of his life, as the Master unleashes the greatest terror of all.
Regeneration of the eleventh Doctor when the most deadly species in the universe unite.
The Twelfth Doctor must face his past to decide his future.